Baking Soda and Vinegar Experiment Worksheet
What you do (Acid + base → gas): 1. Pour vinegar into the plastic bottle, standing on a tray. 2. Spoon two teaspoons of baking soda into the balloon. 3. Stretch the balloon over the bottle’s mouth, letting it hang to the side. 4. Lift the balloon so the soda drops in, and keep faces back.
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- 1.True or false: a battery cell is not needed for the fizzy balloon. (a) True (b) False
- 2.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
- 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) the kind of balloon (c) the amount of vinegar (d) size of the balloon
- 4.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) True (b) False
- 5.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
- 6.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) curd (d) detergent water
- 7.True or false: vinegar is needed for the fizzy balloon. (a) True (b) False
- 8.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) plain water (d) lemon juice
- 9.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) the balloon bursts (c) a huge eruption (d) very little fizzing
- 10.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
- 11.🧺 Do we need a tray for spills for the fizzy balloon? (a) needed (b) not needed
- 12.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the bottle got tired (c) the balloon got cold (d) an ingredient ran out
- 13.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
- 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) False (b) True
- 15.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) put it in your mouth (c) seal it in a glass jar (d) keep it away from eyes
- 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) False (b) True
- 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we keep it the same (c) we change it
- 18.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a mirror (c) a balloon (d) sugar
- 19.True or false: vinegar is neutral. (a) False (b) True
- 20.True or false: an empty bottle is needed for the fizzy balloon. (a) True (b) False
- 21.True or false: sugar water is a base. (a) False (b) True
- 22.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
- 23.True or false: plain water is a base. (a) True (b) False
- 24.🔍 Which is the odd one out? (a) plain water (b) salt water (c) curd (d) sugar water
- 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
- 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) the kind of balloon (c) the same bottle (d) spoons of baking soda
- 27.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) it is only dissolving (c) no, nothing changes (d) yes, a new gas forms
- 28.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) vinegar (c) a comb (d) a mirror
- 29.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a battery cell (b) an empty bottle (c) baking soda (d) a tray for spills
- 30.🔍 Which is the odd one out? (a) vinegar (b) curd (c) lemon juice (d) salt water
- 31.True or false: sugar is needed for the fizzy balloon. (a) False (b) True
- 32.True or false: salt water is neutral. (a) False (b) True
- 33.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rub it hard (c) rinse with clean water (d) ignore it
- 34.🧺 Do we need a mirror for the fizzy balloon? (a) not needed (b) needed
- 35.True or false: a seed is not needed for the fizzy balloon. (a) True (b) False
- 36.🎈 Why does the balloon blow up? (a) vinegar is hot (b) gas is made inside (c) outside air gets in (d) the bottle shrinks
- 37.True or false: tamarind water is an acid. (a) True (b) False
- 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
- 39.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
- 40.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) an empty bottle (c) a battery cell (d) vinegar
Answer key
- True
- an acid
- size of the balloon
- False
- a base
- detergent water
- True
- lemon juice
- very little fizzing
- a base
- needed
- an ingredient ran out
- needed
- False
- keep it away from eyes
- False
- we keep it the same
- a balloon
- False
- True
- False
- an acid
- False
- curd
- we keep it the same
- spoons of baking soda
- yes, a new gas forms
- vinegar
- a battery cell
- salt water
- False
- True
- rinse with clean water
- not needed
- True
- gas is made inside
- True
- True
- a base
- a battery cell
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids